There are many important free resources available either on or from this website.
Since there’s no reason to spend any money if you don’t need to, I suggest you browse through the free resources first. You may find everything you are looking for there without spending a penny!
To find what is available, just select from the drop-down menu available from the ‘Resources” button on the top navigation bar of any page.
Also, I’d welcome any (positive or negative) feedback you are willing to share with me.